Window-ventilator.



A. O. BOHEM.

WINDOW VENTILATOR.

APPLICATION FILED 11.22, 1914.

Patented Nov. 3 1914.

K47176556 J .t

UNITED STATES PATENT OFFICE.

ANTHONY O. BOHEM, OF PHILADELPHIA, PENNSYLVANIA.

WINDOW-VENTILATOR.

Specification of Letters Patent.

Patented Nov. 3, 1914.

Application filed April 22, 1914. Serial No. 833,750.

that the window is closed and to provide for a distribution of the air in a manner to avoid direct drafts upon the occupants of the room.

The objects of the invention are to pro vide a window ventilator which shall be strong, economically constructed, and readily adjustable to windows of difi'erent widths; which enables an accurate regulation through a wide range of the volume of air admitted; which may be readily regulated from within the room and when not in use, i. 6., when the supply of freshair is shut off, embodies no parts that project into the room; which is neat and inconspicuous in appearance inthat the openings through which the air passes are substantially concealed from within the room; and which prevents the air admitted into the room from carrying with it any noticeable foreignmatter or any precipitated moisture.

An embodiment of the invention is illustrated in the accompanying drawings, wherein a Figure lis a perspective view of a window ventilator in which the features of the invention are incorporated; Fig. 2 is a similar view showing the reverse side of the ventilator; Fig. 3 is a vertical sectional view through one of the air-regulating shutters; Fig. 4 is a horizontal sectional View on the line 44 of Fig. 3; and Fig. 5 is a vertical sectional view on the line 5-5 of Fig. 1.

Similar characters of reference designate corresponding parts throughout the several views. l

The ventilator shown and preferred is adjustable in order that it may be accurately fitted to windows of different widths. It will be understood, however, that certain features of the invention, more especially those involving the construction and arrangement of the air-regulatingshutter and its appurtenances, may be practised in C01]: nection with a non-adjustable ventilator as well as with an adjustable one. i i

The ventilator shown in the drawings is made in two counterpart sections, 1 and 2, which are telescopically related whereby the ventilator may be lengthened or shortened in accordance with the width of the window opening in which it is to be fitted.

Each section of the ventilator preferably comprises a sheet metal body 3 having along its upper and lower sides hollow beads which preferably have. a triangular cross.

section. The beads 4 are formed integrally with the body 3 and the portions thereof which coincide or substantially coincide with the plane of said body are disjointed,

from the body, at least in the case of the section 2 whose beads 4 fit over the beads of the section 1. The beads 4: provide upper and lower marginal reinforcements for the ventilator as well as for the telescoping relation of the ventilator sections. Said beads also rovide a relatively fiat and wide bearing or the bars of the window frame and the window sash contiguous thereto.

The sections 1 and 2 are reinforced at their outer ends by' suitably constructed marginal flanges 5, the planes of which are perpendicular to the planes of the bodies of said sections. The flanges 5 ing surfaces at the ends of t e ventilator for the Window framebars contiguous thereto and are connected to the beads 4, the latter having end tongues 6 which are bent to overlie said flanges 5 and are riveted or,

otherwise connected thereto, as shown in The beads 40f the section 2 are of slightly greater dimensions than the beads 4 of the section 1 and the latter telescope within the former, as shown in Figs. 1 and 2, in which relation the body 3 of the section 1 overlies and, hence, partly conceals from within the room the body 3 of the section 2.

The overlying portions of the sections bear with considerable frictional pressure against one another and, therefore, the sections are not liable to any accidental relative movements which would disturb the adjustment thereof. To adjust the sections all that is required is to move them outwardly or inwardly relatively to one another for the purpose of lengthening or shortening the ventilator, as the case may be. When once adjusted, the frictional fit of rovi de bearthe overlying portions of the sections will, as above stated, prevent any accidental disturbance of the adjustment.

The means for admitting and controlling the air is preferably associated with each section of the ventilator where, as in the embodiment disclosed; the ventilator, is made in adjustably related S60tl0IlS..

Air is admitted into the room through an opening 7 and this opening is controlled by a shutter 8 hinged at its lower side as at 9 to an extension 10 of the lower bead 4, the said extension substantially coinciding with the body 3. The shutter 8 in order to eficiently close the opening when the use of the ventilator is not desired, is made longer and deeper than said opening and thus overlies the portions of the ventilator contiguous to the opening at :the sides and upper edges thereof. The shutter 8 has at its sides wings 11 which, in any open position of said shutter, close the space between the same at its sides, and the body of the ventilator. The wings 11 project through the opening 7, working in close relation to the sides of said opening and their upper portions also project through vertical slits 12 which are formed in the material of the ventilator at the upper side of the opening 7. llf desired the shutter 8 may be formed as a frame and provided with a glasspanel for the admission of light.

In order to prevent the passage of dirt or foreign particles, such as scraps of leaves or paper, into the room with the air passing through the opening 7, the shutter 8 carries at its rear side a screen 13 of fine mesh wire mounted in a rectangular frame 14:. The frame 14 has at its forward side an attachment flange 15 and the shank of the knob 16 by which the shutter is manipulated preferably projects through and aids in securing said attachment flange to the shutter. The frame 14: is curved in cross section, as shown in Fig. 3, along an arc the radius of which is taken from the hinge 9 and in any position of the shutter 8 bridges the space between said shutter and the body of the ventilator. i

The passage of precipitated moisture into the room with the in-flowing air is prevented b a guard flange 17 which projects rear-war ly from the ventilator at the upper side of the opening 7 and which is curved in cross section conformably to the curvature of the screen 13. .The flange 17 prevents rain from beating against the shutter or from passing through the opening 7.

In order to limit the outward movement of the plate 8, ii. 6., the movement of the plate away from the body of the ventilator, the Wings '11 are provided at their rear edges with. out-turned flanges 18 which in the course he outward movement of the plate 8 nit tely engage the face of tinuation of said outward movement.

The volume'of air admitted into the room ofcourse depends onthe position of the shutter 8 and is controlled by a suitable adjustment of; said shutter, a greater volume being admitted when the shutter is farther from the body of the ventilator than is admitted when the shutter is nearer to said body. The adjustment of the shutter is effected merely by pulling it away from or pushing it toward the body of the ventilator, and without any further operations. Accidental displacement of the shutter from any position to which it may be adjusted is prevented by reason of the frictional binding of the wings 11 against the sides of the opening 7 and of the frame ll against the guard flange 17, the said frame being constructed of springy or resilient metal and tending to spring against said guard flange.

The heads 4 at their forward sides are preferably extended to the respective upper and lower edges of the opening 7 and adjacent said opening are suitably clenched or otherwise united to the body 1.

When the use of the ventilator is not desired, the shutter 8 is pushed inwardly against the body of the ventilator and thereby completely closes the opening 7, so that no air is admitted through said opening into the room. The complete exclusion of air through said opening in the closed relation of the shutter is provided for by the wings 11, by those portions of the shutter which overlie the body of the ventilator adjacent the sides and the upper edgeof the opening and by a rearwardly directed reinforcing flange 19 at the lower edge of theshutter and upon which certain beads of the hinge joint 9 are formed.

The ventilator may be readily fitted to any window frame within the ran e of its adjustment and requires no mod-i cation whatever either of the window frame or of the window sash. When fitted in position air may be admitted as desired through the opening 7 by suitable adjustment of the shutter-8. It will be observed that the shut-' forwardly and upwardly into the room and, hence, the air which is admitted through the opening 7 does not pass laterally into the room but is deflected in an oblique upward ter 8 in any of its open positions inclines currentby the shutter 8. In this way any direct drafts upon the occupants of the room will be prevented and an advantageous and uniform distribution of the air assured.

Having fully described my invention, 1 claim 1. A window ventilator comprising slidably related counterpart sheet metal sections having relatively flat body portions and hollow heads along the upper and lower least one of said sections.

' rearwardly therefrom through sai 2. A window ventilator comprising a body formed to fit under a window sash and to extend acrossithe window opening and havmg an air' admission opening, a shutter hinged adjacent the loweredge of said air admission 0 ening and arranged at the interior side 0 the ventilator the shutterin any open position thereof projecting forwardly and upwardly into the room, wings arranged.

at the sides of the shutter and projecting rearwardly therefrom, the wings fitting closely against the sides of the air admission opening and being movable through said opening when the shutter is adjusted, a screen carried by the shutter and rojecting d openin at the elevation of the upper edge thereo the screen extending between said wings, and a flange projecting rearwardly from said body and from the upper edge of the air admission opening thereof, the screen tending to spring against the flange in any posi tion of the shutter and to impose frictional resistance against the movement of the shutter. v

3. A window ventilator comprising slidably related counter art sheet metal sections having relativey flat body portions and hollow telescoping beads along the upper edges of said body portions, the beads being formed to provide relatively wide and flat horizontally bearing surfaces for the contiguous sash bar and ventilating means combined with at least one of said sections.

4. A window ventilator comprising a body formed to fit under a window sash and to extend across the window opening and havin an air admission opening, a shutter hinge adjacent the lower edge of said air admission opening andv arranged at the interior side of the ventilator, the shutter in any open position thereof projecting forwardly and upwardl into the room, a screen associated with the shutter, a springy rectangular frame carrying the screen and secured to the shutter, the frame rojecting rearwardly from the shutter, and a flange projecting rearwardly and downwardly from the upper edge of the air admission opening of said b0 y, the screen carrying frame tending to spring upwardly and being arranged to bear with strong frictional pressure against the flange and hold the shutter against displacement.

5. A window ventilator comprising a body formed to fit under a window sash and having an air admission opening, a shutter hinged adjacent thelower edge of the air admission opening and arranged at the interior side of ventilator, an operating knob for the shutter, -a screen associated with the shutter, and a frame projecting rearwardly from the shutter and carrying said screen, the frame having an attachment flange lyin against the shutter and the operating kno bemg constructed to serve as a fastenm device in engaging and securing the sai attachment flange.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ANTHONY O. BOHEM.

Witnesses:

WILLIAM BARK, PAUL A.Powrm. 

